Ohio

 

Historical Timeline
 1787 The Northwest Ordinance outlaws slavery in the Northwest Territories which later developed into Ohio, Indiana, Illinois, Wisconsin, and Michigan.
 1803 Ohio is admitted to the union as a free state.
 1831 Lane theological seminary in Cincinnati expels antislavery students, including Theodore Weld, many of whom become agents for the American Anti-Slavery Society.
 1855 John Mercer Langston, a former slave, is elected clerk of Brownhelm Township in Ohio.  He is the first black to win an elective political office in the United States.